Go/github.com/mattermost/mattermost-server/v6 CVE-2026-4915: unknown, EPSS 0.28%
Mattermost doesn't filter nil elements from outgoing webhook attachment payloads before processing in github.com/mattermost/mattermost-server
Action: No fix published. Pin and monitor.
Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | - | - |
Fixed versions
No fixed version in the source.
Sources
- osv: GO-2026-5845#Go/github.com/mattermost/mattermost-server/v6
- https://github.com/advisories/GHSA-5gmf-x7hg-97wf
- https://nvd.nist.gov/vuln/detail/CVE-2026-4915
- https://github.com/mattermost/mattermost/commit/faa7d75b4ea041701e97948f8aa1332e3626a39a
- https://mattermost.com/security-updates
CVE-2026-4915 · published · modified · JSON